G. Nunzi Conti

TL;DR: In this paper, the authors provide a description of the fundamental properties of WGM resonators and summarize recent works on their application as filters, sensors, and lasers, which makes them very appealing both as laser cavities and as extremely sensitive sensors.

TL;DR: A review of the field of Whispering Gallery Modes (WGMs) can be found in this article, where the authors present a review of WGM resonators, which exist in several geometrical structures like cylindrical optical fibers, microspheres, microfiber coils, microdisks, microtoroids, photonic crystal cavities, etc.

TL;DR: An improved fabrication method of microbubble resonators is presented, based on the heating of a slightly pressurized capillary by a rotating arc discharge, which shows good temporal stability and Q factors up to 6×10(7) at 1550 nm.

TL;DR: A tunable, room temperature, cw multicolor emission in silica microspherical whispering-gallery-mode microresonators has been achieved by controlling the cavity mode dispersion and exciting nonequatorial modes for efficient frequency conversion.

TL;DR: Fitting the positions, widths and heights of resonances in the experimental spectra to the characteristic equation for microsphere modes and to universal coupled microresonator theory establishes sphere radius and index, identify mode numbers, and determine losses.